package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;
import java.util.Objects;


@Service
public class DishSericeImpl implements DishService {

    private static final Logger log = LoggerFactory.getLogger(DishSericeImpl.class);
    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;


    @Override
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
//        向菜品表插入数据
        dishMapper.insert(dish);
        Long dishId = dish.getId();
        log.info("菜品id:{}",dishId);
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size() > 0){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishId);
            });
//        向口味表插入n条数据
            dishFlavorMapper.insertBatch(flavors);
        }
    }

//    菜品分页查询
    @Override
    public PageResult pageQuery(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page = dishMapper.pageQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }


    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        for (Long id : ids){
            Dish dish = dishMapper.getById(id);
            if (dish.getStatus() == StatusConstant.ENABLE){
                throw new RuntimeException(dish.getName()+ MessageConstant.DISH_ON_SALE);
            }
        }
//        判断菜品是否和套餐关联
        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if (setmealIds!=null && setmealIds.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
//        删除菜品
        dishFlavorMapper.deleteByDishId(ids);
        dishMapper.deleteById(ids);

    }

    @Override
    public DishVO getByIdWithFlavor(Long id) {
         Dish dish = dishMapper.getById(id);
         List<DishFlavor> dishFlavors = dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(dishFlavors);

        return dishVO;
    }

    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        List<Long> Ids=new ArrayList<>();
        Ids.add(dishDTO.getId());
        dishFlavorMapper.deleteByDishId(Ids);
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if(flavors!=null&& !flavors.isEmpty()){
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    @Override
    public void startOrStop(Integer status,Long id) {
        Dish dish=dishMapper.getById(id);
        if (Objects.equals(status, StatusConstant.ENABLE)){
            dish.setStatus(StatusConstant.ENABLE);
        }else {
            dish.setStatus(StatusConstant.DISABLE);
        }
        dishMapper.update(dish);
    }

    @Override
    public List<DishVO> getDishByCategoryId(Long categoryId) {
        List<DishVO> dishVOList = dishMapper.getDishByCategoryId(categoryId);
        return dishVOList;
    }

    @Override
    public List<DishVO> listWithFlavor(Dish dish) {

        List<Dish> dishList = dishMapper.list(dish);
        List<DishVO> dishVOList = new ArrayList<>();
        for (Dish d : dishList){
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);
            List<DishFlavor> flavorList = dishFlavorMapper.getByDishId(d.getId());
            dishVO.setFlavors(flavorList);
            dishVOList.add(dishVO);
        }
        return dishVOList;
    }
}
